Data acquisition and processing in high-resolution mass spectrometry using ion counting

Raznikov, V. V.; Dodonov, A. F.; Lanin, E.V.

doi:10.1016/0020-7381(77)80056-9

Cited by 16 publications

(10 citation statements)

References 5 publications

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“…As a simple analysis shows3 a number of bins, or steps of data recording per peak FWHM, of 4–5 may be quite sufficient for good estimation of peak location and intensity.…”

Section: Transformation Of Tof Data To Provide An Almost Constant Nummentioning

confidence: 99%

A new approach to data reduction and evaluation in high‐resolution time‐of‐flight mass spectrometry using a time‐to‐digital convertor data‐recording system

Raznikov¹,

Pikhtelev²,

Dodonov³

et al. 2001

Rapid Comm Mass Spectrometry

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A new effective and robust approach to the detection of incompletely resolved peaks, and evaluation of their parameters in high-resolution time-of-flight mass spectra for time-to-digital convertor (TDC) data acquisition mode, is described. The method is based on fast construction of a smoothed continuous curve that approximates the initial data (transformed to a constant relative width of time intervals for ion counting) with respect to precision of measurements. The first derivative of this curve is used for correction of skewness of the peak shape as far as possible. A contribution of the second derivative is subtracted from the smoothed curve for better resolution of partially resolved peaks. The comparison of local maxima of this resulting final curve with those for the initial smoothed curve allows reliable detection of the peaks and to test whether or not they are spoiled by overlapping. Ion counting performed by TDC gives an opportunity to estimate standard deviations of peak locations and their intensities. These values proved to be close to theoretically minimal standard deviations for these parameters for single fully resolved peaks. Thus, estimates of the main parameters of mass peaks by the described method are close to statistically efficient estimators for these parameters.

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“…As a simple analysis shows3 a number of bins, or steps of data recording per peak FWHM, of 4–5 may be quite sufficient for good estimation of peak location and intensity.…”

Section: Transformation Of Tof Data To Provide An Almost Constant Nummentioning

confidence: 99%

A new approach to data reduction and evaluation in high‐resolution time‐of‐flight mass spectrometry using a time‐to‐digital convertor data‐recording system

Raznikov¹,

Pikhtelev²,

Dodonov³

et al. 2001

Rapid Comm Mass Spectrometry

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“…As was shown [13], if condition (14) holds, then the area A will be an efficient estimate of the peak intensity. We confirm this fact experimentally by measuring isotopic ratios of krypton [34].…”

Section: The Peak Shape Model For Tof Mass Spectrometermentioning

confidence: 92%

“…Handling a large volume of the obtained experimental data requires significant computational resources. This stimulates many authors to develop and improve methods, algorithms and software for mass spectra processing [5,8,[12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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The peak shape model for magnetic sector and time-of-flight mass spectrometers

Peregudov

Buhay

2010

International Journal of Mass Spectrometry

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“…To our knowledge there are no equations for prediction of overall uncertainty resulting from peak‐calculation of mass spectrometry signals, despite the fact that peak‐calculation remains the default method for peak assignment in most software packages. A cited publication from 1977 claims 4–5 points per peak are sufficient, but we have been unable to review this work, and, as noted here, the improvements in S/N for modern instruments likely invalidate the justifications for so few data points 14. We have addressed this gap in understanding by simulating a comprehensive set of peaks with known parameters, then performing peak‐calculation with standard methods.…”

mentioning

confidence: 97%

n‐Type Reduced Graphene Oxide Field‐Effect Transistors (FETs) from Photoactive Metal Oxides

Yoo

Kim

Lee

et al. 2012

Chemistry A European J

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Graphene is of considerable interest as a next-generation semiconductor material to serve as a possible substitute for silicon. For real device applications with complete circuits, effective n-type graphene field effect transistors (FETs) capable of operating even under atmospheric conditions are necessary. In this study, we investigated n-type reduced graphene oxide (rGO) FETs of photoactive metal oxides, such as TiO(2) and ZnO. These metal oxide doped FETs showed slight n-type electric properties without irradiation. Under UV light these photoactive materials readily generated electrons and holes, and the generated electrons easily transferred to graphene channels. As a result, the graphene FET showed strong n-type electric behavior and its drain current was increased. These n-doping effects showed saturation curves and slowly returned back to their original state in darkness. Finally, the n-type rGO FET was also highly stable in air due to the use of highly resistant metal oxides and robust graphene as a channel.

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Data acquisition and processing in high-resolution mass spectrometry using ion counting

Cited by 16 publications

References 5 publications

A new approach to data reduction and evaluation in high‐resolution time‐of‐flight mass spectrometry using a time‐to‐digital convertor data‐recording system

A new approach to data reduction and evaluation in high‐resolution time‐of‐flight mass spectrometry using a time‐to‐digital convertor data‐recording system

The peak shape model for magnetic sector and time-of-flight mass spectrometers

n‐Type Reduced Graphene Oxide Field‐Effect Transistors (FETs) from Photoactive Metal Oxides

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